A load profile for a Battery Energy Storage System (BESS) represents the pattern of power usage and charging/discharging cycles over time. It illustrates the operational behavior of the BESS in response to energy demand, market signals, or control algorithms. Accurate load profiling is critical for system design, financial modeling, and performance forecasting. It helps in determining optimal capacity, degradation rates, and energy throughput, and plays a vital role in battery sizing and lifecycle management.